package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.*;
import com.sky.entity.*;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.OrderBusinessException;
import com.sky.exception.ShoppingCartBusinessException;
import com.sky.mapper.*;
import com.sky.result.PageResult;
import com.sky.service.OrderService;
import com.sky.utils.HttpClientUtil;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderStatisticsVO;
import com.sky.vo.OrderSubmitVO;
import com.sky.vo.OrderVO;
import com.sky.websocket.WebSocketServer;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

@Service
public class OrderServiceImpl implements OrderService {
    @Autowired
    private AddressBookMapper addressBookMapper;
    @Autowired
    private ShoppingCartMapper shoppingCartMapper;
    @Autowired
    private OrderMapper orderMapper;
    @Autowired
    private OrderDetailMapper orderDetailMapper;
    @Autowired
    private UserMapper userMapper;
    @Autowired
    private WeChatPayUtil weChatPayUtil;
    @Autowired
    private WebSocketServer webSocketServer;
    private Orders ordersPay;

    @Value("${sky.shop.address}")
    private String shopAddress;

    @Value("${sky.baidu.ak}")
    private String ak;

    /**
     * 用户下单
     *
     * @param ordersSubmitDTO
     * @return
     */
    @Override
    @Transactional
    public OrderSubmitVO submitOrder(OrdersSubmitDTO ordersSubmitDTO) {
        //检测订单是否存在业务异常（地址为空、购物车为空）
        AddressBook addressBook = addressBookMapper.getById(ordersSubmitDTO.getAddressBookId());
        if (addressBook == null) {
            throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
        }

        //todo 检查用户的收货地址是否超出配送范围
        checkOutOfRange(addressBook.getCityName() + addressBook.getDistrictName() + addressBook.getDetail());

        Long userId = BaseContext.getCurrentId();
        ShoppingCart shoppingCart = new ShoppingCart();
        shoppingCart.setUserId(userId);
        List<ShoppingCart> shoppingCartList = shoppingCartMapper.list(shoppingCart);
        if (shoppingCartList == null || shoppingCartList.isEmpty()) {
            throw new ShoppingCartBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }
        //向订单表中插入一条数据
        Orders orders = new Orders();
        BeanUtils.copyProperties(ordersSubmitDTO, orders);
        orders.setOrderTime(LocalDateTime.now());
        orders.setAddress(addressBook.getDetail());
        orders.setConsignee(addressBook.getConsignee());
        orders.setNumber(String.valueOf(System.currentTimeMillis()));
        orders.setStatus(Orders.PENDING_PAYMENT);
        orders.setPayStatus(Orders.UN_PAID);
        orders.setUserId(userId);
        orders.setPhone(addressBook.getPhone());
        this.ordersPay = orders;
        orderMapper.insert(orders);

        //向订单明细表中插入n条数据
        List<OrderDetail> orderDetailList = new ArrayList<>();
        for (ShoppingCart cart : shoppingCartList) {
            OrderDetail detail = new OrderDetail();
            BeanUtils.copyProperties(cart, detail);
            detail.setOrderId(orders.getId());
            orderDetailList.add(detail);
        }
        orderDetailMapper.insertBatch(orderDetailList);
        //清空购物车
        shoppingCartMapper.deleteByUserId(userId);
        //封装VO对象返回
        OrderSubmitVO orderSubmitVO = OrderSubmitVO.builder()
                .id(orders.getId())
                .orderNumber(orders.getNumber())
                .orderAmount(orders.getAmount())
                .orderTime(orders.getOrderTime())
                .build();
        return orderSubmitVO;
    }

    /**
     * 订单支付
     *
     * @param ordersPaymentDTO
     * @return
     */
    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
        // 当前登录用户id
        Long userId = BaseContext.getCurrentId();
        User user = userMapper.getById(userId);

//        //调用微信支付接口，生成预支付交易单
//        JSONObject jsonObject = weChatPayUtil.pay(
//                ordersPaymentDTO.getOrderNumber(), //商户订单号
//                new BigDecimal(0.01), //支付金额，单位 元
//                "苍穹外卖订单", //商品描述
//                user.getOpenid() //微信用户的openid
//        );
//
//        if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
//            throw new OrderBusinessException("该订单已支付");
//        }
        JSONObject jsonObject = new JSONObject();
        jsonObject.put("code", "ORDERPAID");
        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
        vo.setPackageStr(jsonObject.getString("package"));
        Integer orderStatus = Orders.TO_BE_CONFIRMED; // 订单状态---待接单
        Integer orderPaidStatus = Orders.PAID; //支付状态---已付款
        LocalDateTime checkOutTime = LocalDateTime.now(); //付款时间
        orderMapper.updateStatus(orderStatus, orderPaidStatus, checkOutTime, this.ordersPay.getId());

        //支付成功后通过websocket给管理端提醒
        //1 表示来单提醒 2表示催单提醒
        Map map = new HashMap<>();
        map.put("type",1);
        map.put("orderId",this.ordersPay.getId());
        map.put("content","订单号：" + this.ordersPay.getNumber());
        String msg = JSON.toJSONString(map);
        webSocketServer.sendToAllClient(msg); //给管理端提示
        return vo;
    }

    /**
     * 支付成功，修改订单状态
     *
     * @param outTradeNo
     */
    public void paySuccess(String outTradeNo) {

        // 根据订单号查询订单
        Orders ordersDB = orderMapper.getByNumber(outTradeNo);

        // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.TO_BE_CONFIRMED)
                .payStatus(Orders.PAID)
                .checkoutTime(LocalDateTime.now())
                .build();

        orderMapper.update(orders);


    }

    /**
     * 查询历史订单
     *
     * @param page
     * @param pageSize
     * @param status
     * @return
     */
    @Override
    public PageResult historyOrders(Integer page, Integer pageSize, Integer status) {
        PageHelper.startPage(page, pageSize);
        //执行查询语句
        OrdersPageQueryDTO ordersPageQueryDTO = new OrdersPageQueryDTO();
        ordersPageQueryDTO.setStatus(status);
        ordersPageQueryDTO.setUserId(BaseContext.getCurrentId());
        Page<Orders> ordersPage = orderMapper.pageQuery(ordersPageQueryDTO);

        List<OrderVO> list = new ArrayList<>();
        for (Orders order : ordersPage) {
            OrderVO vo = new OrderVO();
            BeanUtils.copyProperties(order, vo);
            List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(order.getId());
            vo.setOrderDetailList(orderDetailList);
            list.add(vo);
        }
        return new PageResult(ordersPage.getTotal(), list);
    }

    /**
     * 查询订单详情
     *
     * @param id
     */
    @Override
    public OrderVO orderDetail(Long id) {
        //查询订单
        Orders order = orderMapper.getById(id);
        //查询订单详情
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(id);
        OrderVO orderVO = new OrderVO();
        BeanUtils.copyProperties(order, orderVO);
        orderVO.setOrderDetailList(orderDetailList);
        //封装VO返回
        return orderVO;
    }

    /**
     * 取消订单
     *
     * @param id
     */
    @Override
    public void cancelOrder(Long id) throws Exception {
        Orders order = orderMapper.getById(id);
        if (order == null) {
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }
        //订单状态 1待付款 2待接单 3已接单 4派送中 5已完成 6已取消
        if (order.getStatus() > 2) {
            //1 2 状态下可以直接取消订单， >2的情况下取消订单需要和商家沟通
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Orders od = new Orders();
        od.setUserId(BaseContext.getCurrentId());
        od.setId(id);
        //如果在待接单状态下取消订单，需要给用户退款
        if (order.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
//            weChatPayUtil.refund(
//                    order.getNumber(), //商户订单号
//                    order.getNumber(), //商户退款单号
//                    new BigDecimal(0.01),//退款金额，单位 元
//                    new BigDecimal(0.01));//原订单金额

            //支付状态修改为 退款
            od.setPayStatus(Orders.REFUND);
        }
        //取消订单后需要将订单状态修改为“已取消”
        od.setStatus(Orders.CANCELLED);
        od.setCancelReason("用户自己取消");
        od.setCancelTime(LocalDateTime.now());
        orderMapper.update(od);
    }

    /**
     * 用户再来一单
     *
     * @param id
     * @return
     */
    @Override
    public void repetition(Long id) {
        //先查到订单详情
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(id);
        long userId = BaseContext.getCurrentId();
        //然后将订单详情转化为购物车对象
        List<ShoppingCart> shoppingCartList = orderDetailList.stream().map(orderDetail -> {
            ShoppingCart shoppingCart = new ShoppingCart();
            BeanUtils.copyProperties(orderDetail, shoppingCart, "id");
            shoppingCart.setUserId(userId);
            shoppingCart.setCreateTime(LocalDateTime.now());
            return shoppingCart;
        }).collect(Collectors.toList());
        //批量插入购物车
        shoppingCartMapper.insertBatch(shoppingCartList);
    }

    /**
     * 管理端条件查询订单
     *
     * @param ordersPageQueryDTO
     * @return
     */
    @Override
    public PageResult conditionSearch(OrdersPageQueryDTO ordersPageQueryDTO) {
        PageHelper.startPage(ordersPageQueryDTO.getPage(), ordersPageQueryDTO.getPageSize());
        //执行查询条件
        Page<Orders> ordersPage = orderMapper.pageQuery(ordersPageQueryDTO);
        List<Orders> ordersPageResult = ordersPage.getResult();
        List<OrderVO> list = new ArrayList<>();
        for (Orders orders : ordersPageResult) {
            OrderVO orderVO = new OrderVO();
            BeanUtils.copyProperties(orders, orderVO);
            orderVO.setOrderDishes(getOrderDishesStr(orders));
            list.add(orderVO);
        }
        return new PageResult(ordersPage.getTotal(), list);
    }

    /**
     * 根据订单id获取菜品信息字符串
     *
     * @param orders
     * @return
     */
    private String getOrderDishesStr(Orders orders) {
        // 查询订单菜品详情信息（订单中的菜品和数量）
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(orders.getId());

        // 将每一条订单菜品信息拼接为字符串（格式：宫保鸡丁*3；）
        List<String> orderDishList = orderDetailList.stream().map(x -> {
            String orderDish = x.getName() + "*" + x.getNumber() + ";";
            return orderDish;
        }).collect(Collectors.toList());

        // 将该订单对应的所有菜品信息拼接在一起
        return String.join("", orderDishList);
    }

    /**
     * 各个状态的订单数量统计
     *
     * @return
     */
    @Override
    public OrderStatisticsVO statistics() {
        //订单状态 1待付款 2待接单 3已接单 4派送中 5已完成 6已取消
        //待接单 --- 2
        Integer toBeConfirmed = orderMapper.countStatus(Orders.TO_BE_CONFIRMED);
        //待派送 --- 3
        Integer confirmed = orderMapper.countStatus(Orders.CONFIRMED);
        //派送中 --- 4
        Integer deliveryInProgress = orderMapper.countStatus(Orders.DELIVERY_IN_PROGRESS);
        OrderStatisticsVO orderStatisticsVO = new OrderStatisticsVO();
        orderStatisticsVO.setConfirmed(confirmed);
        orderStatisticsVO.setToBeConfirmed(toBeConfirmed);
        orderStatisticsVO.setDeliveryInProgress(deliveryInProgress);
        return orderStatisticsVO;
    }

    /**
     * 查询订单详情
     *
     * @param id
     * @return
     */
    @Override
    public OrderVO details(Long id) {
        //查询订单
        Orders orders1 = orderMapper.getById(id);
        //查询订单详情
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(id);
        OrderVO orderVO = new OrderVO();
        BeanUtils.copyProperties(orders1, orderVO);
        orderVO.setOrderDetailList(orderDetailList);
        //封装vo返回
        return orderVO;
    }

    /**
     * 商家接单
     *
     * @param ordersConfirmDTO
     * @return
     */
    @Override
    public void confirm(OrdersConfirmDTO ordersConfirmDTO) {
        Orders orders1 = Orders.builder()
                .id(ordersConfirmDTO.getId())
                .status(Orders.CONFIRMED).build();
        orderMapper.update(orders1);
    }

    /**
     * 商家拒单
     *
     * @param ordersRejectionDTO
     * @return
     */
    @Override
    public void rejection(OrdersRejectionDTO ordersRejectionDTO) throws Exception {
        Orders orders1 = orderMapper.getById(ordersRejectionDTO.getId());
        //订单状态为待接单的状态才可以拒单
        if (orders1 != null && orders1.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
            System.out.println("为用户退款中.........");
            //如果用户已付款，需要为用户退款 (跳过)
//            if (orders1.getPayStatus().equals(Orders.PAID)) {
//                //执行退款逻辑
//                //如果在待接单状态下取消订单，需要给用户退款
//                weChatPayUtil.refund(
//                        orders1.getNumber(), //商户订单号
//                        orders1.getNumber(), //商户退款单号
//                        new BigDecimal(0.01),//退款金额，单位 元
//                        new BigDecimal(0.01));//原订单金额
//            }
            //更新订单的订单原因、拒单原因、订单状态、取消时间
            Orders orders2 = new Orders();
            //orders2.setPayStatus(Orders.REFUND);
            orders2.setId(ordersRejectionDTO.getId());
            orders2.setStatus(Orders.CANCELLED);
            orders2.setRejectionReason(ordersRejectionDTO.getRejectionReason());
            orders2.setCancelTime(LocalDateTime.now());
            orderMapper.update(orders2);
        } else {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

    }

    /**
     * 商家取消订单
     *
     * @param ordersCancelDTO
     * @return
     */
    @Override
    public void cancel(OrdersCancelDTO ordersCancelDTO) {
        //检查用户是否支付了，如果支付了需要退款
        Orders ordersDB = orderMapper.getById(ordersCancelDTO.getId());

        //如果用户已付款，需要为用户退款 (跳过)
        if (ordersDB.getPayStatus().equals(Orders.PAID)) {
            //执行退款逻辑
            //如果在待接单状态下取消订单，需要给用户退款
            /*weChatPayUtil.refund(
                    ordersDB.getNumber(), //商户订单号
                    ordersDB.getNumber(), //商户退款单号
                    new BigDecimal(0.01),//退款金额，单位 元
                    new BigDecimal(0.01));//原订单金额*/
            System.out.println("正在为用户退款....");
        }
        //更新订单的状态为已取消
        Orders orders1 = new Orders();
        orders1.setId(ordersCancelDTO.getId());
        orders1.setCancelReason(ordersCancelDTO.getCancelReason());
        orders1.setCancelTime(LocalDateTime.now());
        orders1.setStatus(Orders.CANCELLED);
        orderMapper.update(orders1);
    }

    /**
     * 商家派送订单
     * @param id
     * @return
     */
    @Override
    public void deliveryOrder(Long id) {
        //订单状态 1待付款 2待接单 3已接单 4派送中 5已完成 6已取消
        Orders ordersDB = orderMapper.getById(id);
        //只有已接单的订单才可以派送
        if (ordersDB != null && ordersDB.getStatus().equals(Orders.CONFIRMED)){
            //修改订单状态为派送中
            Orders od = Orders.builder().status(Orders.DELIVERY_IN_PROGRESS).id(id).build();
            orderMapper.update(od);
        }else{
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
    }

    /**
     * 商家完成订单
     * @param id
     * @return
     */
    @Override
    public void completeOrder(Long id) {
        Orders order = orderMapper.getById(id);
        //只有派送中的订单才可以完成订单
        if (order != null && order.getStatus().equals(Orders.DELIVERY_IN_PROGRESS)){
            //更新订单状态为已完成
            Orders orders = Orders.builder().id(id).status(Orders.COMPLETED).deliveryTime(LocalDateTime.now()).build();
            orderMapper.update(orders);
        }else {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
    }


    /**
     * 检查客户的收货地址是否超出配送范围
     * @param address
     */
    private void checkOutOfRange(String address) {
        Map map = new HashMap();
        map.put("address",shopAddress);
        map.put("output","json");
        map.put("ak",ak);

        //获取店铺的经纬度坐标
        String shopCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        JSONObject jsonObject = JSON.parseObject(shopCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("店铺地址解析失败");
        }

        //数据解析
        JSONObject location = jsonObject.getJSONObject("result").getJSONObject("location");
        String lat = location.getString("lat");
        String lng = location.getString("lng");
        //店铺经纬度坐标
        String shopLngLat = lat + "," + lng;

        map.put("address",address);
        //获取用户收货地址的经纬度坐标
        String userCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        jsonObject = JSON.parseObject(userCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("收货地址解析失败");
        }

        //数据解析
        location = jsonObject.getJSONObject("result").getJSONObject("location");
        lat = location.getString("lat");
        lng = location.getString("lng");
        //用户收货地址经纬度坐标
        String userLngLat = lat + "," + lng;

        map.put("origin",shopLngLat);
        map.put("destination",userLngLat);
        map.put("steps_info","0");

        //路线规划
        String json = HttpClientUtil.doGet("https://api.map.baidu.com/directionlite/v1/driving", map);

        jsonObject = JSON.parseObject(json);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("配送路线规划失败");
        }

        //数据解析
        JSONObject result = jsonObject.getJSONObject("result");
        JSONArray jsonArray = (JSONArray) result.get("routes");
        Integer distance = (Integer) ((JSONObject) jsonArray.get(0)).get("distance");

        if(distance > 5000){
            //配送距离超过5000米
            throw new OrderBusinessException("超出配送范围");
        }
    }

    /**
     * 客户催单
     * @param id
     * @return
     */
    @Override
    public void reminder(Long id) {
        Orders order = orderMapper.getById(id);
        if (order == null ) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Map map = new HashMap();
        map.put("type",2); //2 表示催单
        map.put("orderId",id);
        map.put("content","订单号：" + order.getNumber());
        webSocketServer.sendToAllClient(JSON.toJSONString(map));
    }
}


